Jail Chroot Project is an attempt of write a tool that builds a chrooted
environment. The main goal of Jail is to be as simple as possible, and
highly portable. The most difficult step when building a chrooted
environment is to set up the right libraries and files. Here, Jail comes
to the rescue with a tool to automagically configures & builds all the
required files, directories and libraries. Jail is licensed under the
GNU General Public License.

Jail program has been written using C, and the setup script has been
written using a bash script and perl. Jail has been tested under Linux (Debian
2.1 & 2.2, RedHat 6.1, 6.2 and 7.0 and Caldera Openlinux 7.0), Solaris (2.6),
IRIX (6.5) and FreeBSD 4.3. Some people has contributed to jail with
patches and ideas. Thanks to all of them.

Jail supports lots of interesting features:

Runs on Linux, Solaris, IRIX and freeBSD (tested) and should run
in any of the flavours of these operating systems.

Modular design, so you can port Jail in an easy way.

Support for multiple users in a single chrooted environment.

Fully customizable user shell.

Support for multiple servers: telnetd, sshd, ftpd...

Easy to install thanks to the enviroment creation script.

Should work in any UNIX.

Ease of porting.

Allows run any kind of program as a shell.

An html version of the mailing list has been added to the web
site. Now you can read all the user contributions, ideas and
patches here.